Essential oil diffuser



FIG. 1 is a front perspective view of a essential oil diffuser in accordance with the new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof. 

CLAIM The ornamental design for essential oil diffuser, as shown and described. 